These great hollow globes of artificial super-metals, and artificial transparent adamant, ranged in size from the earliest and smallest structures, which were no bigger than a very small asteroid, to spheres considerably larger than the Earth. (Olaf Stapledon, STAR MAKER)
Thursday, February 9, 2017
Today's Astronomy Picture of the Day is a crescent Enceladus, around Saturn. Thanks to the hard-working Cassini orbiter for another beautiful view!